66487522578466 has 32 divisors (see below), whose sum is σ = 110215658926080. Its totient is φ = 29828024226000.

The previous prime is 66487522578461. The next prime is 66487522578569.

66487522578466 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×66487522578466² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 66487522578392 and 66487522578401.

It is not an unprimeable number, because it can be changed into a prime (66487522578461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2361210 + ... + 11770741.

It is an arithmetic number, because the mean of its divisors is an integer number (3444239341440).

Almost surely, 2^{66487522578466} is an apocalyptic number.

66487522578466 is a deficient number, since it is larger than the sum of its proper divisors (43728136347614).

66487522578466 is a wasteful number, since it uses less digits than its factorization.

66487522578466 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14134750.

The product of its digits is 6502809600, while the sum is 76.

The spelling of 66487522578466 in words is "sixty-six trillion, four hundred eighty-seven billion, five hundred twenty-two million, five hundred seventy-eight thousand, four hundred sixty-six".